1 Aker Engineering Malaysia Sdn Bhd
2 Cekap Technical Services Sdn Bhd
3 Environmental Resources Management (M) Sdn Bhd
4 Enserv Sdn Bhd
5 Emerson Process Management (M) Sdn Bhd
6 IFP Engineering Solutions Sdn. Bhd.
7 MECIP Global Engineers Sdn Bhd
8 MMC Oil & Gas Engineering Sdn Bhd
9 Ranhill Worley Parsons Sdn Bhd
10 RNZ Integrated (M) Sdn Bhd
11 Synergy Oil & Gas Engineering Sdn Bhd
12 T.EN CONSULTANT (M) SDN BHD.
13 Toyo Engineering & Constructions Sdn Bhd
14 WEG South East Asia Sdn Bhd
15 Minconsult Sdn Bhd
16 Fluor Daniel International (M) Sdn Bhd
17 ICE Wood Sdn Bhd (Formerly known as Wood Group Engineering Sdn Bhd )(Wood Group Mustang (M) Sdn Bhd & Foster Wheeler E&C (M) Sdn Bhd merged together)
18 IGL Services Sdn Bhd
19 Kemuncak Lanai Sdn Bhd
20 Elektro Serve (M) Sdn. Bhd
21 Tuah Consult Sdn Bhd (Formerly known as Maju Integrated Engineers Sdn Bhd )
22 APulsar Technologies Sdn Bhd
23 Ertha Energy Sdn Bhd